Battery grid casting machine



Feb. 1, 1938. A. H. LUHRMAN BATTERY GRID CASTING MACHINE Filed Aug. 10,1956 4 Sheets-Sheet 1 fig w INVENTOR.

ALBERT H. LUHRMAN.

ATTORNEY.

eh i, 138. A. H. LUHRMAN 2,107,041

BATTERY GRID CASTING MACHINE Filed Aug. 10, 1956 4 Sheets-Sheet 2 IllINVENTOR.

AL. H. LUHRMAN ATTORNEY.

Feb. 1, 1938. A. H. LUHRMAN BATTERY GRID CASTING MACHINE 4- Sheets-Sheet3.

Filed Aug. 10, 1 936 INVENTOR. ALBERT .H. LUHRMAN BY 2% W ATTORIZJEY.

5 3 mm 00 mm m.

u MH Feb. 1, 1938. A. H. LUHRMAN 2,197,041

BATTERYGRID CASTING MACHINE Filed Aug. 10, 1936 '4 Sheets-Sheet 4' w. g5 61 3333 w a Q 4 v e i m .I n Glkw-ARRKM I 5 I 3 s m 5 m M 3 3 "a 4 3 1Z 1 m m m m m B O O O 1 8 l. 3 u.. a

INVENTOR.

ALBERT H. LUHRMAN'. FKZW ATTORNEY.

Patented leb. 1938 UNITED STATES PATENT .,()I""F I'CIE'.- 2,107,041 4BATTERY can) CASTING MACHINE Albert H. -Luhrma n, Cincinnati, Ohio T@pplication August 10, 1936, Serial No. 95,171

3 Claims. (01. 22-57) My invention relates to an improved grid castingmachine of the multiple type wherein a plu-' rallty of gridsare'automatically cast, ejected and.

conveyed out of the machine.-

The object of my invention is to provide "improved grid forming molds,improved means for opening and closing the molds, improved means foraccurately delivering predetermined quan'ti ties of molten metal to themolds, improved means for ejecting the cast grids grids out of themachine.

A further object is to pro molds on each side of the lead and 4conveying the vide a plurality of pot andalternately casting grids oneach side of the machine and delivering said grids from the machine. 7

My invention will be further readily understood from the followingdescription and claims, and from the drawings, in which latter:

Fig. 1 is a plan view of my improved machine.

Fig. 2 is a side view of the same, partly broken away. Fig. 3 is avertical section in the plane of the line 3-3 of the same, taken of Fig.'1.

Fig. 4 is a detail section, taken in the plane of the line 44'of Fig. 2,showing the molds in open position, and

Fig. 5 is a detailed section of the lead pumps,

taken in the plane of the line 5-5 of Fig. 1.

My improved machine comprises a frame It constructed of suitablechannels and angleirons arranged to support a central lead pot l2, whichhas suitable means in conjunction therewith for maintaining the lead orcasting material in a molten state. On each side of the lead pot are apair of channel irons II and 14, having suitable openings l5 and i6therein.

extends across the machine and is suitably supported in bearings 2| andhas segment gears 22 A cross shaft 20 which support is connected to across-bar 29 arranged to reciprocate in the openings l5.

On either side of the channels l3 and I4 are rods 30, supported inbearings 3| and having threaded connection with the cross-bar 29.

It will be noted that the segment gears 22 are positioned at rightangles to each other to permit alternate movement to the respective bars29 on each side of the machine. A suitable plurality of lead molds 32are arrange ports II and on each side of the machine andcomprisestationary parts 33 34, which are suitably secure d between thesupflxed to cross-bars d to the frames l3 respective slides 29 foroperating the pumps.-

and [4, while the complemental movable molds 35 are secured tocross-bars 36 being guided and slidable in the openings IS. 'The rods.30 extend through these cross-bars and have collars 3'! ar- 1, rangedto contact the cross-bars for moving the 5 movable molds endwise awayfrom the station- Y ary-molds against the tension of springs 38 confinedby collars 39.

Above each of the molds is provided a lead cup 40, pivoted on supports4| and interconnected as by a bar 42 having a linkagegconnection 43 witha cam 44 mounted on the shaft 20. Suitable lead pumps 50 extend into thelead pot l2. A central shaft 5! is supported above the lead pot and hasrocker arms 52 thereon for alternately pumping lead through the pumps50, through tubes 53 into the lead cups 4!]. Adjustments are'providedfor regulating the length of the stroke of the lead pump for pumping theexact quantity of lead to the lead cup necessary to form a completegrid. The shaft 5| has a rocker arm 54 securedto' one end thereof andsaid rocker arm has cables 55 connected to the respective slides 29 forrocking the shaft 5| on the forward movement of the The shaft 20 issuitably driven by a chain at received over sprocket wheel SI On theshaft 20 and about a sprocketwheel 52, extending from a speed changemechanism 53 which is driven by an electric motor.

Suitableconveyors 65 are supported below the molds on each side of themachine and are driven by sprocket chains 66 from the speed changemechanism. Slides 6! are arranged below the molds for guiding cast gridsto the conveyor.

Suitable knock-out pins 10 are provided in the stationary mold, beingconnected to cross-bars I l, which bar's aresupported on studs 12 havingsprings 13 interposed between the bar and the mold support. The movablecross-bars 36 are provided with studs 14 arranged to contact a knock-outbar 1| when the molds are openfor causing the pin I0 to free the gridfrom the mold .33.

In the operation of my improved casting machine, the lead is alternatelypumped to the respective lead cups on each side of the machine and asthe molds close, the lead cups are tipped for pouring the lead into themolds and the molds remain ,in this position until the complemental gearsegment causes rotation of the pinion gear 28 which rotation causeseccentric 25 to rotate, thus opening the molds. As the molds are openthe casting is eiected,- slides-down the slide 01 to the conveyor 65 andis carried out of the ma- .one set of molds and their actuating parts,it will be apparent that all of the molds are similar in construction onboth sides of the machine and are actuated in like manner.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

'1. In a casting machine, the combination of a lead pot, a plurality ofpairs of complemental molds on each side of said lead pot, one part ofeach mold being stationary, the otherpart of each mold being mountedone; slide, a cross-shaft below said slides, a pair of segment gearsalternately spaced on said shaft, shafts above said first-named shaft,pinion gears on said shafts arranged to be rotated by the respectivesegments, and crank arms on said second-named shafts having connectionwith said slides for opening'and closing said molds.

2. In a casting machine, the combination of a lead pot, a pluralityofpairs of complemental molds on each side of said lead pot, one part ofeach mold being stationary, the other part of'each mold being mounted ona slide, a cross-shaft below said slides, a pair of segmentgearsalternately spac on said shaft, shafts above said firstnamed s aft,pinion gears on said shafts arranged to be rotated by the r p t vtments.

crank arms on said second-named shafts having connection with saidslides for opening and 0108-,

ing said molds, and a lead cup pivoted above each of said molds andmeans for tipping said cups upon closing of said molds.

3. In a casting machine, the combination of a lead pot, a plurality ofpairs of complemental molds on each side of saidlead pot, one part ofeach mold being stationary, the other part of each mold being mounted ona slide, a crossshaft below said slides, a pair of segment gearsalternately spaced on said shaft, shafts above said first-named shaft,pinion gears on said shafts arranged to be rotated by the respectiveseg-- ments,'crank arms on said second-named shafts having connectionwith said slides for opening and closing said molds on the respectivesides of said lead pot alternately,- a lead cup pivoted-above each ofsaid molds, means for tipping said cups upon closing of said molds,means for releasing the castings upon opening of said, molds, andconveyors for .carrying said released castings out of said machine.

ALBERT H. LUHRMAN.

